The cases are increasing; the patients are worsening. Anna and Ged must try to identify the cause.

Brother and sister find themselves navigating a web of secrets in the village of Bly. And soon, a violent storm will make them more isolated than ever...

Dark Medical Thriller by Matthew Broughton, creator of Tracks and Broken Colours.

With original music by Sion Orgon and Rhodri Davies

CASTAnna Diaz- Saran MorganGed Diaz - Sion Daniel YoungRuth - Michelle BonnardRaymond - Ioan Hefin Nell - Diana Yekinni Maggie - Catrin AaronSian Ellis - Ceri LloydMr Dartington - Ifan Huw Dafydd

Original music by Sion Orgon and Rhodri Davies

Production Coordinator Eleri McAuliffeSound Design by Catherine RobinsonDirected by Fay LomasA BBC Audio Wales production for Radio 4